ASME Boiler and
Pressure Vessel Code
An International Code

2015

R ul e s for Const ruction
of He at i ng B oi l e rs

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SECTION IV

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ASME BPVC.I V-2015

No fu


2015 ASME Boiler &
Pressure Vessel Code
2015 Edition

July 1, 2015

RULES FOR CONSTRUCTION
OF HEATING BOILERS
ASME Boiler and Pressure Vessel Committee
on Heating Boilers

Two Park Avenue • New York, NY • 10016 USA

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IV

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

AN INTERNATIONAL CODE

No fu


This international code or standard was developed under procedures accredited as meeting the criteria for
American National Standards and it is an American National Standard. The Standards Committee that approved
the code or standard was balanced to assure that individuals from competent and concerned interests have
had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and
the public-at-large.
ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.
ASME does not take any position with respect to the validity of any patent rights asserted in connection with any
items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability
for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are
expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such
rights, is entirely their own responsibility.
Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as
government or industry endorsement of this code or standard.
ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.
The endnotes and preamble in this document (if any) are part of this American National Standard.

ASME collective membership mark


Certification Mark

“ASME” is the trademark of The American Society of Mechanical Engineers.

No part of this document may be reproduced in any form, in an electronic
retrieval system or otherwise, without the prior written permission of the
publisher.
Library of Congress Catalog Card Number: 56-3934
Printed in the United States of America
Adopted by the Council of The American Society of Mechanical Engineers, 1914; latest edition 2015.
The American Society of Mechanical Engineers
Two Park Avenue, New York, NY 10016-5990

Copyright © 2015 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved

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The above ASME symbol is registered in the U.S. Patent Office.

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Date of Issuance: July 1, 2015

No fu


List of Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Statement of Policy on the Use of the Certification Mark and Code Authorization in Advertising
Statement of Policy on the Use of ASME Marking to Identify Manufactured Items . . . . . . . . . . . .
Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees . . . . .
Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preamble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Changes in Record Number Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code . . . . . . . . . . . . .

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xiii
xv
xv
xvi
xviii
xxxv
xxxvi
xl
xlii

General Requirements for All Materials of Construction . . . . . . . . . . . .

1

Article 1
HG-100
HG-101
HG-102
HG-103


Scope and Service Restrictions
Scope . . . . . . . . . . . . . . . . . . . . . . .
Service Restrictions . . . . . . . . . . .
Units . . . . . . . . . . . . . . . . . . . . . . .
Tolerances . . . . . . . . . . . . . . . . . .

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2

Article 2
HG-200
HG-201

Material Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Material Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specific Material Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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3


Article 3
HG-300
HG-301
HG-305
HG-306
HG-307
HG-309
HG-312
HG-320
HG-321
HG-323
HG-325
HG-326
HG-327
HG-328
HG-330
HG-340
HG-341
HG-342
HG-343
HG-345
HG-346
HG-350
HG-360
HG-370

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Design Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylindrical Parts Under Internal Pressure . . . . . . . . . . . . . . . . . . . . . .

Formed Heads, Pressure on Concave Side . . . . . . . . . . . . . . . . . . . . . .
Formed Heads, Pressure on Convex Side . . . . . . . . . . . . . . . . . . . . . . .
Flat Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spherically Dished Covers (Bolted Heads) . . . . . . . . . . . . . . . . . . . . . .
Cylindrical Parts Under External Pressure . . . . . . . . . . . . . . . . . . . . . .
Openings in Boilers, General Requirements, . . . . . . . . . . . . . . . . . . . .
Reinforcement Required for Openings in Shells and Formed Heads
Flanged‐In Openings in Formed Heads . . . . . . . . . . . . . . . . . . . . . . . . .
Reinforcement Required for Openings in Flat Heads . . . . . . . . . . . . .
Limits of Metal Available for Reinforcement . . . . . . . . . . . . . . . . . . . .
Strength of Reinforcement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reinforcement for Multiple Openings . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Access Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stayed Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Staybolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions of Stays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions of Diagonal Stays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Staying of Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tubesheets with Firetubes Used as Stays . . . . . . . . . . . . . . . . . . . . . .
Ligaments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements for Tube Holes and Tube Attachments . . . . . . . . . . . .
External Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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23
23
25
25
26
26
29
31

Article 4
HG-400

Pressure Relieving Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Relieving Valve Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

TABLE OF CONTENTS

No fu


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34
35
38
38

Article 5
HG-500

Tests, Inspection, and Stamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proof Tests to Establish Design Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

39

39

Article 6
HG-600
HG-601
HG-610
HG-620
HG-630
HG-640

Instruments, Fittings, and Controls . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For Steam Heating Boilers . . . . . . . . . . . . . . . . . . . . . . .
For Hot Water Heating or Hot Water Supply Boilers .
For All Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls and Heat Generating Apparatus . . . . . . . . . . .

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53
53
55

56
56
57

Article 7
HG-700

Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Requirements, All Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

58
58

Requirements for Boilers Constructed of Wrought Materials . . . . . . . .

67

Article 1
HF-100

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

67
67

Article 2
HF-200
HF-201
HF-202

HF-203
HF-204
HF-205
HF-206

68
68
68
68
68
69
70

HF-207
HF-210

Material Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Material Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rods, Bars, and Shapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prefabricated or Preformed Pressure Parts . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pipe and Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Not Fully Identified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recertification of Material Produced to a Specification Not Permitted by This
Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Austenitic Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintaining Material Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Article 3
HF-300

HF-301
HF-302

Design Stresses and Minimum Thicknesses . . . . . . . . . . . . . . . . . . . .
Maximum Allowable Stress Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Thicknesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basis for Establishing Stress Values in Tables HF-300.1 and HF-300.2

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72

Requirements for Boilers Fabricated by Welding . . . . . . . . . . . . . . . . . . .

95

Article 4
HW-400
HW-401

General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Responsibility of Manufacturer or Contractor . . . . . . . . . . . . . . . . . . . . . . . . .


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Article 5
HW-500
HW-501
HW-502

Material Requirements . . . . . . . . . .
Permissible Materials . . . . . . . . . . . . .
Materials of Different Specifications .
Materials for Small Parts . . . . . . . . . .

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Article 6
HW-600
HW-610
HW-611
HW-612
HW-613


Welding Processes and Qualifications . . . . . . . . . . . . . . . . . . . . .
Welding Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Welding Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No Production Work Without Qualifications . . . . . . . . . . . . . . . . . .
Interchange of Qualifying Tests Among Manufacturers Prohibited
Maintenance of Records of Qualifications and Identifying Marks .

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Article 7
HW-700

Part HF

Part HF — Subpart HW

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Design of Weldments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Design of Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Minimum Requirements for Safety and Safety Relief Valves
Discharge Capacities of Safety and Safety Relief Valves . . . .
Heating Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature and Pressure Safety Relief Valves . . . . . . . . . .

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HG-401
HG-402
HG-403
HG-405

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112
112
112
112
112
112
113
114
114

Article 9

HW-900
HW-910
HW-911

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection During Fabrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check of Welding Procedure Qualifications . . . . . . . . . . . . . . . . . . . . .
Check of Welder and Welding Operator Performance Qualifications

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115
115
115

Requirements for Boilers Fabricated by Brazing . . . . . . . . . . . . . . . . . . .

116

Article 10
HB-1000
HB-1001

General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Responsibility of Manufacturer or Contractor . . . . . . . . . . . . . . . . . . . . . . . . .

116
116
116

Article 11
HB-1100
HB-1101
HB-1102
HB-1103

Material Requirements . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . .
Combinations of Dissimilar Materials .
Brazing Filler Metals . . . . . . . . . . . . . . .

Fluxes and Atmospheres . . . . . . . . . . .

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117
117
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117

Article 12
HB-1200
HB-1201
HB-1202

Brazing Processes, Procedures, and Qualifications .
Brazing Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Joint Brazing Procedures . . . . . . . . . . . . . . . . . . . . . . . . .
Brazing Qualifications and Records . . . . . . . . . . . . . . . .


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118
118
118


Article 13
HB-1300
HB-1301
HB-1302
HB-1303
HB-1304
HB-1305
HB-1306
HB-1307

Design . . . . . . . . . . . . . . . . . . . . . . .
Strength of Brazed Joints . . . . . . . .
Brazed Joint Efficiency Factors . . .
Minimum Thickness . . . . . . . . . . . .
Permissible Service Temperature .
Application of Brazing Filler Metal
Joint Clearance . . . . . . . . . . . . . . . . .
Openings . . . . . . . . . . . . . . . . . . . . . .
Brazed Connections . . . . . . . . . . . . .

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119
119
119
119
119
119
119
120
120

Article 14
HB-1400
HB-1401
HB-1402

Fabrication Requirements . . . . .
Cleaning of Surfaces to Be Brazed .
Postbrazing Operations . . . . . . . . .
Repair of Defective Brazing . . . . . .

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121
121
121
121

Article 15
HB-1500

Inspection and Stamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

122
122

Requirements for Boilers Constructed of Cast Iron . . . . . . . . . . . . . . . . .

123

Article 1
HC-100


General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

123
123

Article 2
HC-200
HC-201
HC-202
HC-203
HC-204

Material Requirements . . . . . .
General Material Requirements .
Manufacture . . . . . . . . . . . . . . . . .
Chemical Composition . . . . . . . .
Tensile Strength Classification . .
Test Bars . . . . . . . . . . . . . . . . . . .

124
124
124
124
124
124

Part HF — Subpart HB


Part HC

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This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

Fabrication Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forming Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Base Metal Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specific Welding Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair of Weld Defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Posthydrotest Welding of Nonpressure Parts to Pressure Parts .

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Article 8
HW-800
HW-801

HW-810
HW-812
HW-813
HW-820
HW-830
HW-840

No fu


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124
126
126
126
126
126
126
126
127
128

Article 3
HC-300
HC-301
HC-310
HC-311
HC-315
HC-320
HC-325
HC-330

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Allowable Stress Values . . . . . . . . . . . . . . . .
Basis for Establishing Stress Values in Table HC-300 .
Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spherically Shaped Covers . . . . . . . . . . . . . . . . . . . . . . .
Openings and Reinforcements . . . . . . . . . . . . . . . . . . . .
Corners and Fillets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washout Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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129
129
129
129
129
131
131
131
132

Article 4
HC-400

Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tests to Establish Design Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

133
133

Article 5
HC-501
HC-502

Quality Control and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outline of Features to Be Included in the Written Description of the Quality
Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Certificates of Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

135
135

Requirements for Boilers Constructed of Cast Aluminum . . . . . . . . . . . .

138

Article 1
HA-100

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

138
138

Article 2
HA-200
HA-201
HA-202
HA-203

Material Requirements . . . . . . .
General Material Requirements . .
Workmanship, Finish, and Repair
Examinations and Tests . . . . . . . .
Test Records . . . . . . . . . . . . . . . . .


Article 3
HA-300
HA-301
HA-302
HA-303
HA-304
HA-305

Design . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Allowable Stress Values . .
Heads and Spherically Shaped Covers
Openings and Reinforcements . . . . . .
Corners and Fillets . . . . . . . . . . . . . . .
Washout Openings . . . . . . . . . . . . . . .
Assembly Method . . . . . . . . . . . . . . . .

HC-510
HC-520
Part HA

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135
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136

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139
139
139
139
140

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141
141
141
141
141
141

141

Article 4
HA-400

Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tests to Establish Design Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

142
142

Article 5
HA-501
HA-502

Quality Control and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outline of Features to Be Included in the Written Description of the Quality
Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certificates of Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

144
144

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HA-503
HA-504

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144
145
145

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

Selection of Test Bar Size . . . . . . .
Molding and Pouring Test Bars . .
Number of Tests . . . . . . . . . . . . . .
Tension Test . . . . . . . . . . . . . . . . .
Tension Test Procedure . . . . . . . .
Tension Retests . . . . . . . . . . . . . . .
Transverse Test . . . . . . . . . . . . . . .
Transverse Test Procedure . . . . .
Transverse Retests . . . . . . . . . . . .
Workmanship, Finish, and Repair

Examinations and Tests . . . . . . . .
Test Records . . . . . . . . . . . . . . . . .

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

HC-205
HC-206
HC-207
HC-208
HC-209
HC-210
HC-211
HC-212
HC-213
HC-214
HC-215
HC-216

No fu


147
147

Article 1
HLW-100
HLW-101
HLW-102
HLW-103


General . . . . . . . . . . .
Scope . . . . . . . . . . . . . .
Service Limits . . . . . .
Permissible Stamping
Units . . . . . . . . . . . . . .

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149
149
149
149
149

Article 2
HLW-200
HLW-201
HLW-202
HLW-203
HLW-204
HLW-205

Material Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Primary Pressure Parts Material . . . . . . . . . . . . . . . . . . . . . .
Acceptance of Unidentified or Small Quantities of Material
Miscellaneous Pressure Parts Material . . . . . . . . . . . . . . . . .
Flanges and Pipe Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nonpressure Part Material . . . . . . . . . . . . . . . . . . . . . . . . . . .

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151
151
152
152
153
153
153

Article 3
HLW-300
HLW-301
HLW-302
HLW-303
HLW-305
HLW-306
HLW-307
HLW-308
HLW-309
HLW-310


Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basis for Establishing Stress Values in Tables HLW-300 and HLW-301
Minimum Thicknesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shells Under Internal Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blank Unstayed Dished Heads, Pressure on Concave Side . . . . . . . . . . . .
Blank Unstayed Dished Heads, Pressure on Convex Side . . . . . . . . . . . . .
Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tubes Attached by Rolling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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154
154
154
154
154
158
159
159
159
159
159

Article 4
HLW-400

Design of Weldments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Design of Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

161
161

Article 5
HLW-500


Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tests to Establish Maximum Allowable Working Pressure and Production
Line Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

175

Article 6
HLW-600
HLW-601
HLW-602

Inspection and Stamping . . . . . . . . . . . . . . . . . .
Inspection and Certification . . . . . . . . . . . . . . . . .
Manufacturer’s Data and Partial Data Reports .
Stamping of Water Heaters and Storage Tanks .

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177
177
177
178

Article 7
HLW-700

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

180
180

Article 8
HLW-800
HLW-801
HLW-805
HLW-809
HLW-810
HLW-820

Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Safety Relief Valves . . . . . . . . . . . . . . . . . . . . . . . .
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provisions for Thermal Expansion in Hot Water Systems .
Bottom Drain Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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181

181
181
182
182
182
183

Mandatory Appendix 2

Codes, Standards, and Specifications Referenced in Text . . . . . . . . . . . .

185

Mandatory Appendix 3

Adhesive Attachment of Nameplates to Casing . . . . . . . . . . . . . . . . . . . . .

187

Mandatory Appendix 4

Guide to Manufacturer’s Data Report Forms . . . . . . . . . . . . . . . . . . . . . . .

188

Mandatory Appendix 5

Vacuum Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

213


Mandatory Appendix 6

Standard Units for Use in Equations

..............................

215

Mandatory Appendix 7

Rules for Mass-Production of Heating Boilers . . . . . . . . . . . . . . . . . . . . . .

216

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This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

Requirements for Potable‐Water Heaters . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Part HLW

No fu


Criteria for Reapplication of a Certification Mark . . . . . . . . . . . . . . . . . . .

218

Mandatory Appendix 9

Establishing Governing Code Editions, Addenda, and Cases for Heating
Boilers and Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

221

Nonmandatory Appendix A

Estimating Pressure Relief Valve Capacity Requirements . . . . . . . . . . . .

223

Nonmandatory Appendix B

Method of Checking Safety Valve and Safety Relief Valve Capacity by
Measuring Maximum Amount of Fuel That Can Be Burned . . . . . . . .


224

Nonmandatory Appendix C

Examples of Method of Calculating a Welded Ring Reinforced Furnace

226

Nonmandatory Appendix D

Examples of Methods of Computation of Openings in Boiler Shells . . .

228

Nonmandatory Appendix E

Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

231

Nonmandatory Appendix F

Quality Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

235

Nonmandatory Appendix H

List of Abbreviations and Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


237

Nonmandatory Appendix I

................................................................

238

Nonmandatory Appendix K

Guide to Information Appearing on Certificate of Authorization . . . . .

239

Nonmandatory Appendix M

Guidance for the Use of U.S. Customary and SI Units in the ASME Boiler
and Pressure Vessel Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

242

Guide to Manufacturer’s Certificate of Conformance for Pressure Relief
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

245

Nonmandatory Appendix N

HG-326.2

HG-340.1
HG-340.2
HG-340.3
HG-343
HG-345.1(a)
HG-345.1(b)
HG-350.1
HG-350.2
HG-350.3
HG-350.4
HG-402
HG-530.1
HG-530.2
HG-530.3
HG-530.4
HG-530.5
HG-530.6
HG-530.7
HG-530.8
HG-703.1(a)

Some Acceptable Types of Unstayed Flat Heads and Covers . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spherically Dished Steel Plate Covers With Bolting Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acceptable Type of Ring-Reinforced Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connection Between Plain and Corrugated Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acceptable Type of Semicircular Furnace Reinforcement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chart for Determining Values of F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Representative Configurations Describing the Reinforcement Dimension, te, and the
Finished Opening Dimension, d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nomenclature and Formulas for Reinforced Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pitch of Staybolts Adjacent to Upper Corners of Fireboxes . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acceptable Proportions for Ends of Through‐Stays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Examples of Acceptable Corner Welds for Pressures Not Over 30 psi . . . . . . . . . . . . . . . . . . .
Details of Installation of Diagonal Stays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sketch Showing Application of HG-345.1 to the Staying of Boilers . . . . . . . . . . . . . . . . . . . . . .
Sketch Showing Application of HG-345.1 to the Staying of Boilers . . . . . . . . . . . . . . . . . . . . . .
Example of Tube Spacing With Pitch of Holes Equal in Every Row . . . . . . . . . . . . . . . . . . . . .
Example of Tube Spacing With Pitch of Holes Unequal in Every Second Row . . . . . . . . . . . .
Example of Tube Spacing With Pitch of Holes Varying in Every Second and Third Row . . . .
Example of Tube Spacing With Tube Holes on Diagonal Lines . . . . . . . . . . . . . . . . . . . . . . . . .
Official Certification Mark to Denote the American Society of Mechanical Engineers’ Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Official Certification Mark to Denote the American Society of Mechanical Engineers’ Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam and Water Boilers Form of Marking on Completed Boilers or Their Nameplates . . . .
Boilers Suitable for Water Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam and Water Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boilers Suitable for Water Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boilers Suitable for Water Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam and Water Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boilers Suitable for Water Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam Boilers in Battery ‐ Pumped Return ‐ Acceptable Piping Installation . . . . . . . . . . . . . .
viii

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This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

FIGURES
HG-307
HG-309
HG-312.4
HG-312.7
HG-312.8
HG-321

HG-326.1

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Mandatory Appendix 8

No fu


HW-710.4(a)
HW-710.4(b)
HW-715.1
HW-731
HW-740
HW-745
HC-204.1
HC-205.1
HC-311
HLW-401.1
HLW-401.2
HLW-411
HLW-413
HLW-415
HLW-431.1
HLW-431.5
HLW-432.1

4-1
8-200-1
D-100

D-101
K-1
TABLES
HG-321
HG-340
HG-360
HG-370
HG-709.2
HG-715
HF-300.1
HF-300.1M
HF-300.2
HF-300.2M
HW-713
HB-1305
HC-212
HC-214
HC-300

Values of Spherical Radius Factor K 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allowable Pitch of Stays, in. (mm) (Limited by HG-340.3) . . . . . . . . . . .
Permitted O‐Ring Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Thickness of Material for Threaded Connections to Boilers . .
Expansion Tank Capacities for Forced Hot Water Systems . . . . . . . . . . .
Size of Bottom Blowoff Piping, Valves, and Cocks . . . . . . . . . . . . . . . . . . .
Maximum Allowable Stress Values for Ferrous Materials, ksi . . . . . . . . .
Maximum Allowable Stress Values for Ferrous Materials, MPa . . . . . . .
Maximum Allowable Stress Values for Nonferrous Materials, ksi . . . . . .
Maximum Allowable Stress Values for Nonferrous Materials, MPa . . . .
Firetube Extension Through Tubesheets for Welded Construction . . . .

Recommended Joint Clearances at Brazing Temperature . . . . . . . . . . . .
Correction Factors for Transverse Test Bars . . . . . . . . . . . . . . . . . . . . . . .
Pipe Plug Size for Minimum Wall Thickness . . . . . . . . . . . . . . . . . . . . . . .
Maximum Allowable Stress Values in Tension for Cast Iron, ksi (MPa) .

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60
61
65
66
98
100
101
101
103
105
108

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125
125
130
161
162
163
165
167
168
170
172
178
178
183
184
189
220
228
229
241

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24
31
32
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64
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79

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129

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

HLW-602.1
HLW-602.2
HLW-809.1
HLW-809.2

Steam Boilers in Battery ‐ Gravity Return ‐ Acceptable Piping Installation . . . . . . . . . . . . . . .
Hot Water Boilers in Battery ‐ Acceptable Piping Installation . . . . . . . . . . . . . . . . . . . . . . . . . .
Spacing and Weld Details for Supporting Lugs in Pairs on Horizontal‐Return Tubular Boiler
Welded Bracket Connection for Horizontal‐Return Tubular Boiler . . . . . . . . . . . . . . . . . . . . .
Butt Welding of Plates of Unequal Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Forms of Attachments of Pressure Parts to Flat Plates to Form a Corner Joint (Tee
Joint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Acceptable Types of Diagonal Stays for Installation by Welding . . . . . . . . . . . . . . . . . .
Unacceptable Types of Diagonal Stays for Installation by Welding . . . . . . . . . . . . . . . . . . . . .
Heads Attached to Shells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Acceptable Types of Welds for Fittings, Nozzles, and Other Connections to Shells,
Drums, and Headers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three‐Ply Joint Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Two‐Ply Joint Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions of Tensile Test Specimen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cast Test Bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spherically Shaped Covers With Bolting Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Butt Welding of Plates of Unequal Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Corner Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Water Heater Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tubes Attached by Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heads Attached to Shells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Acceptable Types of Welds for Fittings, Nozzles, and Other Connections to Shells and
Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Acceptable Types of Welds for Fittings, Nozzles, and Other Connections to Shells and
Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Acceptable Types of Brazed Fittings, Nozzles, and Other Connections to Copper‐Lined
Shells and Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Official Symbol to Denote The American Society of Mechanical Engineers’ Standard . . . . . .
Form of Stamping on Completed Water Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Typical Acceptable Piping Installation for Storage Water Heaters in Battery . . . . . . . . . . .
A Typical Acceptable Piping Installation for Flow Through Water Heater With Provisions for
Piping Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guide for the Preparation of Section IV Manufacturer’s Data Report Forms . . . . . . . . . . . . . .
Guide for Completing the Certificate of Conformance for Reapplication of the Certification
Mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computation of Typical Pad Reinforcement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computation of a Typical Nozzle Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sample Certificate of Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

HG-703.1(b)
HG-703.2
HG-725(a)

HG-725(b)
HW-701.1
HW-701.3

No fu


FORMS
H-2
H-3
H-4
H-5
H-5A
H-6
HC-1
HC-2
HA-1
HA-2
HLW-6
HLW-7
HLW-8
8-1
HV-1

Maximum Allowable Stress Values in Tension for Lined Water Heater Materials, ksi (MPa) .
Maximum Allowable Stress Values in Tension for Unlined Water Heater Materials ksi (MPa)
Expansion Tank Capacities for a Water Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Codes, Standards, and Specifications Referenced in Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Units for Use in Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guide for Estimating Steaming Capacity Based on Heating Surface . . . . . . . . . . . . . . . . . . . . . .

Guide for the Preparation of Section IV Manufacturer’s Certificate of Conformance Form HV-1

Manufacturer’s Data Report for all Types of Boilers Except Watertube and those Made of Cast Iron
Manufacturer’s Data Report for Watertube Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Partial Data Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Master Data Report for Boilers Constructed from Cast Iron . . . . . . . . . . . . . . . . . . .
Manufacturer’s Master Data Report for Boilers Constructed from Cast Aluminum . . . . . . . . . . . . .
Manufacturer’s Data Report Supplementary Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Material Certificate of Conformance for Cast Iron Boiler Sections . . . . . . . . . . . . . .
Manufacturer’s Material Certificate of Conformance for Hydrostatic Testing of Cast Iron Boiler
Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Material Certificate of Conformance for Cast Aluminum Boiler Sections . . . . . . . .
Manufacturer’s Material Certificate of Conformance for Hydrostatic Testing of Cast Aluminum Boiler
Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Data Report for Water Heaters or Storage Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Partial Data Report for Water Heaters and Storage Tanks . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Master Data Proof Test Report for Water Heaters or Storage Tanks . . . . . . . . . . .
Certificate of Conformance for Reapplication of the Certification Mark . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer’s Certificate of Conformance for Pressure Relief Valves . . . . . . . . . . . . . . . . . . . . . . .

x

193
195
197
199
201
203
204
205

206
207
208
210
212
219
247

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ENDNOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

155
157
182
185
215
223
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HLW-300
HLW-301
HLW-809.1
2-100
6-1
A-100

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SECTIONS
I
Rules for Construction of Power Boilers
Materials
• Part A — Ferrous Material Specifications
• Part B — Nonferrous Material Specifications
• Part C — Specifications for Welding Rods, Electrodes, and Filler Metals
• Part D — Properties (Customary)
• Part D — Properties (Metric)

III

Rules for Construction of Nuclear Facility Components
• Subsection NCA — General Requirements for Division 1 and Division 2
• Appendices
• Division 1
– Subsection NB — Class 1 Components
– Subsection NC — Class 2 Components
– Subsection ND — Class 3 Components
– Subsection NE — Class MC Components
– Subsection NF — Supports
– Subsection NG — Core Support Structures
– Subsection NH — Class 1 Components in Elevated Temperature Service*
• Division 2 — Code for Concrete Containments
• Division 3 — Containments for Transportation and Storage of Spent Nuclear Fuel and High Level Radioactive

Material and Waste
• Division 5 — High Temperature Reactors

IV

Rules for Construction of Heating Boilers

V

Nondestructive Examination

VI

Recommended Rules for the Care and Operation of Heating Boilers

VII

Recommended Guidelines for the Care of Power Boilers

VIII Rules for Construction of Pressure Vessels
• Division 1
• Division 2 — Alternative Rules
• Division 3 — Alternative Rules for Construction of High Pressure Vessels
IX

Welding, Brazing, and Fusing Qualifications

X

Fiber-Reinforced Plastic Pressure Vessels


XI

Rules for Inservice Inspection of Nuclear Power Plant Components

XII

Rules for Construction and Continued Service of Transport Tanks

*
The 2015 Edition of Section III is the last edition in which Section III, Division 1, Subsection NH, Class 1 Components in Elevated Temperature
Service, will be published. The requirements located within Subsection NH have been moved to Section III, Division 5, Subsection HB, Subpart B
for the elevated temperature construction of Class A components.

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II

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LIST OF SECTIONS

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Interpretations of the Code have historically been posted in January and July at Interpretations issued during the previous two calendar years are included with the publication of the applicable Section of the Code in the 2015 Edition. Interpretations of Section III, Divisions 1 and 2 and Section III Appendices

are included with Subsection NCA.
Following the 2015 Edition, interpretations will not be included in editions; they will be issued in real time in ASME's
Interpretations Database at Historical BPVC interpretations may also be found in
the Database.

CODE CASES
The Boiler and Pressure Vessel Code committees meet regularly to consider proposed additions and revisions to the
Code and to formulate Cases to clarify the intent of existing requirements or provide, when the need is urgent, rules for
materials or constructions not covered by existing Code rules. Those Cases that have been adopted will appear in the
appropriate 2015 Code Cases book: “Boilers and Pressure Vessels” or “Nuclear Components.” Supplements will be sent
or made available automatically to the purchasers of the Code Cases books up to the publication of the 2017 Code.

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xii

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INTERPRETATIONS

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*

The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance
with ANSI's requirements for an ANS. Therefore, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the Code.
**
Construction, as used in this Foreword, is an all-inclusive term comprising materials, design, fabrication, examination, inspection, testing,
certification, and pressure relief.


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In 1911, The American Society of Mechanical Engineers established the Boiler and Pressure Vessel Committee to formulate standard rules for the construction of steam boilers and other pressure vessels. In 2009, the Boiler and Pressure
Vessel Committee was superseded by the following committees:
(a) Committee on Power Boilers (I)
(b) Committee on Materials (II)
(c) Committee on Construction of Nuclear Facility Components (III)
(d) Committee on Heating Boilers (IV)
(e) Committee on Nondestructive Examination (V)
(f) Committee on Pressure Vessels (VIII)
(g) Committee on Welding, Brazing, and Fusing (IX)
(h) Committee on Fiber-Reinforced Plastic Pressure Vessels (X)
(i) Committee on Nuclear Inservice Inspection (XI)
(j) Committee on Transport Tanks (XII)
(k) Technical Oversight Management Committee (TOMC)
Where reference is made to “the Committee” in this Foreword, each of these committees is included individually and
collectively.
The Committee’s function is to establish rules of safety relating only to pressure integrity, which govern the
construction** of boilers, pressure vessels, transport tanks, and nuclear components, and the inservice inspection of nuclear components and transport tanks. The Committee also interprets these rules when questions arise regarding their
intent. The technical consistency of the Sections of the Code and coordination of standards development activities of the
Committees is supported and guided by the Technical Oversight Management Committee. This Code does not address
other safety issues relating to the construction of boilers, pressure vessels, transport tanks, or nuclear components, or
the inservice inspection of nuclear components or transport tanks. Users of the Code should refer to the pertinent codes,
standards, laws, regulations, or other relevant documents for safety issues other than those relating to pressure integrity. Except for Sections XI and XII, and with a few other exceptions, the rules do not, of practical necessity, reflect the
likelihood and consequences of deterioration in service related to specific service fluids or external operating environments. In formulating the rules, the Committee considers the needs of users, manufacturers, and inspectors of pressure
vessels. The objective of the rules is to afford reasonably certain protection of life and property, and to provide a margin
for deterioration in service to give a reasonably long, safe period of usefulness. Advancements in design and materials

and evidence of experience have been recognized.
This Code contains mandatory requirements, specific prohibitions, and nonmandatory guidance for construction activities and inservice inspection and testing activities. The Code does not address all aspects of these activities and those
aspects that are not specifically addressed should not be considered prohibited. The Code is not a handbook and cannot
replace education, experience, and the use of engineering judgment. The phrase engineering judgement refers to technical judgments made by knowledgeable engineers experienced in the application of the Code. Engineering judgments
must be consistent with Code philosophy, and such judgments must never be used to overrule mandatory requirements
or specific prohibitions of the Code.
The Committee recognizes that tools and techniques used for design and analysis change as technology progresses
and expects engineers to use good judgment in the application of these tools. The designer is responsible for complying
with Code rules and demonstrating compliance with Code equations when such equations are mandatory. The Code
neither requires nor prohibits the use of computers for the design or analysis of components constructed to the

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FOREWORD*

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xiv

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requirements of the Code. However, designers and engineers using computer programs for design or analysis are cautioned that they are responsible for all technical assumptions inherent in the programs they use and the application of
these programs to their design.
The rules established by the Committee are not to be interpreted as approving, recommending, or endorsing any proprietary or specific design, or as limiting in any way the manufacturer's freedom to choose any method of design or any
form of construction that conforms to the Code rules.

The Committee meets regularly to consider revisions of the rules, new rules as dictated by technological development,
Code Cases, and requests for interpretations. Only the Committee has the authority to provide official interpretations of
this Code. Requests for revisions, new rules, Code Cases, or interpretations shall be addressed to the Secretary in writing
and shall give full particulars in order to receive consideration and action (see Submittal of Technical Inquiries to the
Boiler and Pressure Vessel Standards Committees). Proposed revisions to the Code resulting from inquiries will be presented to the Committee for appropriate action. The action of the Committee becomes effective only after confirmation
by ballot of the Committee and approval by ASME. Proposed revisions to the Code approved by the Committee are submitted to the American National Standards Institute (ANSI) and published at to
invite comments from all interested persons. After public review and final approval by ASME, revisions are published at
regular intervals in Editions of the Code.
The Committee does not rule on whether a component shall or shall not be constructed to the provisions of the Code.
The scope of each Section has been established to identify the components and parameters considered by the Committee
in formulating the Code rules.
Questions or issues regarding compliance of a specific component with the Code rules are to be directed to the ASME
Certificate Holder (Manufacturer). Inquiries concerning the interpretation of the Code are to be directed to the Committee. ASME is to be notified should questions arise concerning improper use of an ASME Certification Mark.
When required by context in this Section, the singular shall be interpreted as the plural, and vice versa, and the feminine, masculine, or neuter gender shall be treated as such other gender as appropriate.

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ASME has established procedures to authorize qualified organizations to perform various activities in accordance
with the requirements of the ASME Boiler and Pressure Vessel Code. It is the aim of the Society to provide recognition
of organizations so authorized. An organization holding authorization to perform various activities in accordance with
the requirements of the Code may state this capability in its advertising literature.
Organizations that are authorized to use the Certification Mark for marking items or constructions that have been
constructed and inspected in compliance with the ASME Boiler and Pressure Vessel Code are issued Certificates of
Authorization. It is the aim of the Society to maintain the standing of the Certification Mark for the benefit of the users,
the enforcement jurisdictions, and the holders of the Certification Mark who comply with all requirements.
Based on these objectives, the following policy has been established on the usage in advertising of facsimiles of the
Certification Mark, Certificates of Authorization, and reference to Code construction. The American Society of Mechanical
Engineers does not “approve,” “certify,” “rate,” or “endorse” any item, construction, or activity and there shall be no statements or implications that might so indicate. An organization holding the Certification Mark and/or a Certificate of
Authorization may state in advertising literature that items, constructions, or activities “are built (produced or performed) or activities conducted in accordance with the requirements of the ASME Boiler and Pressure Vessel Code,”

or “meet the requirements of the ASME Boiler and Pressure Vessel Code.” An ASME corporate logo shall not be used
by any organization other than ASME.
The Certification Mark shall be used only for stamping and nameplates as specifically provided in the Code. However,
facsimiles may be used for the purpose of fostering the use of such construction. Such usage may be by an association or
a society, or by a holder of the Certification Mark who may also use the facsimile in advertising to show that clearly specified items will carry the Certification Mark. General usage is permitted only when all of a manufacturer’s items are
constructed under the rules.

The ASME Boiler and Pressure Vessel Code provides rules for the construction of boilers, pressure vessels, and nuclear
components. This includes requirements for materials, design, fabrication, examination, inspection, and stamping. Items
constructed in accordance with all of the applicable rules of the Code are identified with the official Certification Mark
described in the governing Section of the Code.
Markings such as “ASME,” “ASME Standard,” or any other marking including “ASME” or the Certification Mark shall not
be used on any item that is not constructed in accordance with all of the applicable requirements of the Code.
Items shall not be described on ASME Data Report Forms nor on similar forms referring to ASME that tend to imply
that all Code requirements have been met when, in fact, they have not been. Data Report Forms covering items not fully
complying with ASME requirements should not refer to ASME or they should clearly identify all exceptions to the ASME
requirements.

xv

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STATEMENT OF POLICY ON THE USE OF ASME MARKING TO
IDENTIFY MANUFACTURED ITEMS

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STATEMENT OF POLICY ON THE USE OF THE CERTIFICATION
MARK AND CODE AUTHORIZATION IN ADVERTISING


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SUBMITTAL OF TECHNICAL INQUIRIES TO THE BOILER AND
PRESSURE VESSEL STANDARDS COMMITTEES
1

INTRODUCTION

(a) The following information provides guidance to Code users for submitting technical inquiries to the committees.
See Guideline on the Approval of New Materials Under the ASME Boiler and Pressure Vessel Code in Section II, Parts C
and D for additional requirements for requests involving adding new materials to the Code. Technical inquiries include
requests for revisions or additions to the Code rules, requests for Code Cases, and requests for Code Interpretations, as
described below.
(1) Code Revisions. Code revisions are considered to accommodate technological developments, address administrative requirements, incorporate Code Cases, or to clarify Code intent.
(2) Code Cases. Code Cases represent alternatives or additions to existing Code rules. Code Cases are written as a
question and reply, and are usually intended to be incorporated into the Code at a later date. When used, Code Cases
prescribe mandatory requirements in the same sense as the text of the Code. However, users are cautioned that not
all jurisdictions or owners automatically accept Code Cases. The most common applications for Code Cases are:
(-a) to permit early implementation of an approved Code revision based on an urgent need
(-b) to permit the use of a new material for Code construction
(-c) to gain experience with new materials or alternative rules prior to incorporation directly into the Code
(3) Code Interpretations. Code Interpretations provide clarification of the meaning of existing rules in the Code, and
are also presented in question and reply format. Interpretations do not introduce new requirements. In cases where
existing Code text does not fully convey the meaning that was intended, and revision of the rules is required to support
an interpretation, an Intent Interpretation will be issued and the Code will be revised.

(c) Inquiries that do not comply with these provisions or that do not provide sufficient information for a committee’s
full understanding may result in the request being returned to the inquirer with no action.


2

INQUIRY FORMAT
Submittals to a committee shall include:
(a) Purpose. Specify one of the following:
(1) revision of present Code rules
(2) new or additional Code rules
(3) Code Case
(4) Code Interpretation

(b) Background. Provide the information needed for the committee’s understanding of the inquiry, being sure to include reference to the applicable Code Section, Division, edition, addenda (if applicable), paragraphs, figures, and tables.
Preferably, provide a copy of the specific referenced portions of the Code.
(c) Presentations. The inquirer may desire or be asked to attend a meeting of the committee to make a formal presentation or to answer questions from the committee members with regard to the inquiry. Attendance at a committee meeting shall be at the expense of the inquirer. The inquirer’s attendance or lack of attendance at a meeting shall not be a
basis for acceptance or rejection of the inquiry by the committee.
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(b) The Code rules, Code Cases, and Code Interpretations established by the committees are not to be considered as
approving, recommending, certifying, or endorsing any proprietary or specific design, or as limiting in any way the freedom of manufacturers, constructors, or owners to choose any method of design or any form of construction that conforms to the Code rules.

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CODE REVISIONS OR ADDITIONS


Requests for Code revisions or additions shall provide the following:
(a) Proposed Revisions or Additions. For revisions, identify the rules of the Code that require revision and submit a copy
of the appropriate rules as they appear in the Code, marked up with the proposed revision. For additions, provide the
recommended wording referenced to the existing Code rules.
(b) Statement of Need. Provide a brief explanation of the need for the revision or addition.
(c) Background Information. Provide background information to support the revision or addition, including any data
or changes in technology that form the basis for the request that will allow the committee to adequately evaluate the
proposed revision or addition. Sketches, tables, figures, and graphs should be submitted as appropriate. When applicable, identify any pertinent paragraph in the Code that would be affected by the revision or addition and identify paragraphs in the Code that reference the paragraphs that are to be revised or added.

4

CODE CASES

Requests for Code Cases shall provide a Statement of Need and Background Information similar to that defined in 3(b)
and 3(c), respectively, for Code revisions or additions. The urgency of the Code Case (e.g., project underway or imminent,
new procedure, etc.) must be defined and it must be confirmed that the request is in connection with equipment that will
bear the Certification Mark, with the exception of Section XI applications. The proposed Code Case should identify the
Code Section and Division, and be written as a Question and a Reply in the same format as existing Code Cases. Requests
for Code Cases should also indicate the applicable Code editions and addenda (if applicable) to which the proposed Code
Case applies.

5

CODE INTERPRETATIONS

6

SUBMITTALS

Submittals to and responses from the committees shall meet the following:

(a) Submittal. Inquiries from Code users shall be in English and preferably be submitted in typewritten form; however,
legible handwritten inquiries will also be considered. They shall include the name, address, telephone number, fax number, and e-mail address, if available, of the inquirer and be mailed to the following address:
Secretary
ASME Boiler and Pressure Vessel Committee
Two Park Avenue
New York, NY 10016-5990
As an alternative, inquiries may be submitted via e-mail to: or via our online tool at http://
go.asme.org/InterpretationRequest.
(b) Response. The Secretary of the appropriate committee shall acknowledge receipt of each properly prepared inquiry and shall provide a written response to the inquirer upon completion of the requested action by the committee.
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(a) Requests for Code Interpretations shall provide the following:
(1) Inquiry. Provide a condensed and precise question, omitting superfluous background information and, when
possible, composed in such a way that a “yes” or a “no” Reply, with brief provisos if needed, is acceptable. The question
should be technically and editorially correct.
(2) Reply. Provide a proposed Reply that will clearly and concisely answer the Inquiry question. Preferably, the Reply
should be “yes” or “no,” with brief provisos if needed.
(3) Background Information. Provide any background information that will assist the committee in understanding
the proposed Inquiry and Reply.
(b) Requests for Code Interpretations must be limited to an interpretation of a particular requirement in the Code or a
Code Case. The committee cannot consider consulting type requests such as the following:
(1) a review of calculations, design drawings, welding qualifications, or descriptions of equipment or parts to determine compliance with Code requirements;
(2) a request for assistance in performing any Code-prescribed functions relating to, but not limited to, material
selection, designs, calculations, fabrication, inspection, pressure testing, or installation;
(3) a request seeking the rationale for Code requirements.

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PERSONNEL
ASME Boiler and Pressure Vessel Standards Committees,
Subgroups, and Working Groups
January 1, 2015

MARINE CONFERENCE GROUP

TECHNICAL OVERSIGHT MANAGEMENT COMMITTEE (TOMC)
T. P. Pastor, Chair
R. W. Barnes, Vice Chair
J. S. Brzuszkiewicz, Staff Secretary
R. J. Basile
J. E. Batey
T. L. Bedeaux
D. L. Berger
D. A. Canonico
A. Chaudouet
D. B. DeMichael
R. P. Deubler
P. D. Edwards
J. G. Feldstein
R. E. Gimple
M. Gold
T. E. Hansen
G. W. Hembree


J. G. Hungerbuhler, Jr.
G. Nair

J. F. Henry
R. S. Hill III
G. G. Karcher
W. M. Lundy
J. R. MacKay
W. E. Norris
G. C. Park
M. D. Rana
R. F. Reedy, Sr.
B. W. Roberts
S. C. Roberts
F. J. Schaaf, Jr.
A. Selz
B. F. Shelley
W. J. Sperko
R. W. Swayne
C. Withers

CONFERENCE COMMITTEE

A. J. Justin
W. G. Knecht
J. LeCoff
T. G. McCarty
G. C. Millman
R. A. Moen

R. F. Reedy, Sr.

D. E. Mallory — New Hampshire
W. McGivney — New York
U. Merkle — Iowa
M. S. Moore — Michigan
S. V. Nelson — Colorado
C. C. Novak — Illinois
T. Oda — Washington
R. P. Pate — Alabama
M. K. Perdue — Oregon
M. Poehlmann — Alberta, Canada
J. F. Porcella — West Virginia
A. Pratt — Connecticut
C. F. Reyes — California
M. J. Ryan — Illinois
M. H. Sansone — New York
T. S. Scholl — British Columbia,
Canada
G. L. Schultz — Nevada
T. S. Seine — North Dakota
C. S. Selinger — Saskatchewan,
Canada
D. Slater — Manitoba, Canada
N. Smith — Pennsylvania
R. Spiker — North Carolina
R. K. Sturm — Utah
S. R. Townsend — Prince Edward
Island, Canada
R. D. Troutt — Texas

M. J. Verhagen — Wisconsin
M. Washington — New Jersey
K. L. Watson — Mississippi
C. J. Wilson III — Kansas

ADMINISTRATIVE COMMITTEE
T. P. Pastor, Chair
R. W. Barnes, Vice Chair
J. S. Brzuszkiewicz, Staff Secretary
R. J. Basile
J. E. Batey
T. L. Bedeaux
D. L. Berger

J. F. Henry

INTERNATIONAL INTEREST REVIEW GROUP

R. S. Hill III
V. Felix
Y.-G. Kim
S. H. Leong
W. Lin
O. F. Manafa

G. C. Park
M. D. Rana
B. F. Shelley
W. J. Sperko


xviii

C. Minu
T. S. G. Narayannen
Y.-W. Park
R. Reynaga
P. Williamson

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D. A. Douin — Ohio, Secretary
M. J. Adams — Ontario, Canada
J. T. Amato — Minnesota
B. P. Anthony — Rhode Island
R. D. Austin — Arizona
R. J. Brockman — Missouri
M. A. Burns — Florida
J. H. Burpee — Maine
C. B. Cantrell — Nebraska
D. C. Cook — California
B. J. Crawford — Georgia
E. L. Creaser — New Brunswick,
Canada
J. J. Dacanay — Hawaii
C. Dautrich — North Dakota
P. L. Dodge — Nova Scotia, Canada
D. Eastman — Newfoundland and
Labrador, Canada
J. J. Esch — Delaware
C. Fulton — Alaska

R. J. Handy — Kentucky
D. R. Hannon — Arkansas
E. S. Kawa — Massachusetts
J. C. Klug — Wisconsin
M. Kotb — Quebec, Canada
T. C. Hellman — Oklahoma
E. G. Hilton — Virginia
D. T. Jagger — Ohio
K. J. Kraft — Maryland
L. C. Leet — Washington
A. M. Lorimor — South Dakota
M. Mailman — Northwest
Territories, Canada

HONORARY MEMBERS (MAIN COMMITTEE)
F. P. Barton
R. J. Cepluch
T. M. Cullen
W. D. Doty
G. E. Feigel
O. F. Hedden
M. H. Jawad

N. Prokopuk
J. D. Reynolds

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Subgroup on Locomotive Boilers (BPV I)

L. Moedinger
P. A. Molvie
Y. Oishi
E. M. Ortman
J. T. Pillow
B. W. Roberts
J. M. Tanzosh
D. Tompkins
D. E. Tuttle
J. Vattappilly
R. V. Wielgoszinski
Y. Li, Delegate
H. Michael, Delegate
D. N. French, Honorary Member
T. C. McGough, Honorary Member
R. L. Williams, Honorary Member

L. Moedinger, Chair
S. M. Butler, Secretary
P. Boschan
J. Braun
R. C. Franzen, Jr.
D. W. Griner
S. D. Jackson
M. A. Janssen


Subgroup on Materials (BPV I)
G. W. Galanes, Chair
K. K. Coleman, Vice Chair
J. S. Hunter, Secretary
S. H. Bowes
D. A. Canonico
P. Fallouey
K. L. Hayes
J. F. Henry

Subgroup on Design (BPV I)
J. Vattappilly, Chair
D. I. Anderson, Secretary
D. Dewees
P. Dhorajia
H. A. Fonzi, Jr.
J. P. Glaspie
G. B. Komora

S. A. Lee
G. M. Ray
J. E. Rimmasch
R. B. Stone
M. W. Westland
R. Yuill
R. D. Reetz, Contributing Member

P. A. Molvie
D. A. Olson

S. V. Torkildson

M. Lewis
O. X. Li
F. Masuyama
D. W. Rahoi
B. W. Roberts
J. M. Tanzosh
J. Vattappilly

M. Wadkinson
C. F. Jeerings, Contributing Member
J. C. Light, Contributing Member

Subgroup on Solar Boilers (BPV I)
Subgroup on Fabrication and Examination (BPV I)
J. Hainsworth
T. E. Hansen
C. T. McDaris
R. E. McLaughlin
R. J. Newell
Y. Oishi
R. V. Wielgoszinski

D. J. Koza
F. Massi
E. M. Ortman
M. J. Slater
J. C. Light, Contributing Member


India International Working Group (BPV I)
H. Dalal
I. Kalyanasundaram
S. Mathur
A. J. Patil
A. R. Patil
G. V. S. Rao

Subgroup on General Requirements and Piping (BPV I)
T. E. Hansen, Chair
E. M. Ortman, Vice Chair
F. Massi, Secretary
P. Becker
D. L. Berger
P. D. Edwards
G. W. Galanes
W. L. Lowry
R. E. McLaughlin

B. Mollitor
J. T. Pillow
D. Tompkins
S. V. Torkildson
D. E. Tuttle
M. Wadkinson
R. V. Wielgoszinski
C. F. Jeerings, Contributing Member
R. Uebel, Contributing Member

U. Revisanakaran

N. Satheesan
G. U. Shanker
D. Shrivastava
S. Venkataramana

Task Group on Modernization of BPVC Section I
D. I. Anderson, Chair
U. D’Urso, Staff Secretary
J. L. Arnold
S. W. Cameron
D. Dewees
G. W. Galanes
J. P. Glaspie
T. E. Hansen

Subgroup on Heat Recovery Steam Generators (BPV I)
S. V. Torkildson, Chair
J. L. Arnold
J. P. Bell
B. G. Carson
J. Gertz
T. E. Hansen

G. B. Komora
C. T. McDaris
Y. Oishi
E. M. Ortman
D. Tompkins
B. C. Turczynski


xix

J. F. Henry
R. E. McLaughlin
P. A. Molvie
E. M. Ortman
J. T. Pillow
B. W. Roberts
D. E. Tuttle
J. Vattappilly

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J. T. Pillow, Chair
J. L. Arnold, Secretary
P. Becker
D. L. Berger
S. W. Cameron
S. Fincher
G. W. Galanes
P. F. Gilston

J. S. Hunter, Chair
S. V. Torkildson, Secretary
G. W. Galanes
R. E. Hearne
P. Jennings

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).


COMMITTEE ON POWER BOILERS (BPV I)
D. L. Berger, Chair
R. E. McLaughlin, Vice Chair
U. D'Urso, Staff Secretary
J. L. Arnold
S. W. Cameron
D. A. Canonico
K. K. Coleman
P. D. Edwards
P. Fallouey
J. G. Feldstein
G. W. Galanes
T. E. Hansen
J. F. Henry
J. S. Hunter
W. L. Lowry
F. Massi

No fu


Subgroup on International Material Specifications (BPV II)

E. Shapiro
M. J. Slater
R. C. Sutherlin
R. W. Swindeman
J. M. Tanzosh
D. Tyler
O. Oldani, Delegate

H. D. Bushfield, Contributing
Member
M. L. Nayyar, Contributing Member
E. G. Nisbett, Contributing Member
E. Upitis, Contributing Member
T. M. Cullen, Honorary Member
W. D. Doty, Honorary Member
W. D. Edsall, Honorary Member
G. C. Hsu, Honorary Member
R. A. Moen, Honorary Member
C. E. Spaeder, Jr., Honorary
Member
A. W. Zeuthen, Honorary Member

A. Chaudouet, Chair
O. X. Li, Vice Chair
T. F. Miskell, Secretary
S. W. Cameron
D. A. Canonico
H. Chen
P. Fallouey
A. F. Garbolevsky
D. O. Henry

M. Ishikawa
W. M. Lundy
A. R. Nywening
E. Upitis
F. Zeller
D. Kwon, Delegate

O. Oldani, Delegate
H. Lorenz, Contributing Member

Subgroup on Nonferrous Alloys (BPV II)
R. C. Sutherlin, Chair
M. H. Gilkey, Vice Chair
H. Anada
J. Calland
D. B. Denis
J. F. Grubb
A. Heino
M. Katcher
J. A. McMaster
L. Paul

D. W. Rahoi
W. Ren
E. Shapiro
M. H. Skillingberg
D. Tyler
J. Weritz
R. Wright
R. Zawierucha
W. R. Apblett, Jr., Contributing
Member

Subgroup on Physical Properties (BPV II)
Executive Committee (BPV II)
J. F. Henry, Chair
D. W. Rahoi, Vice Chair

N. Lobo, Staff Secretary
A. Appleton
A. Chaudouet
J. R. Foulds
M. Gold

J. F. Grubb, Chair
H. D. Bushfield
D. B. Denis

J. F. Grubb
R. W. Mikitka
B. W. Roberts
R. C. Sutherlin

Subgroup on Strength, Ferrous Alloys (BPV II)

R. W. Swindeman
J. M. Tanosh

J. R. Harris III
M. H. Jawad
C. R. Thomas
M. Wadkinson
M. Katcher, Contributing Member
C. H. Sturgeon, Contributing
Member

Subgroup on Strength of Weldments (BPV II & BPV IX)
W. F. Newell, Jr., Chair

S. H. Bowes
K. K. Coleman
P. D. Flenner
J. R. Foulds
D. W. Gandy
M. Gold
K. L. Hayes

Subgroup on Ferrous Specifications (BPV II)
A. Appleton, Chair
K. M. Hottle, Vice Chair
P. Wittenbach, Secretary
H. Chen
B. M. Dingman
M. J. Dosdourian
P. Fallouey
J. D. Fritz
T. Graham
J. M. Grocki
J. F. Grubb
C. Hyde

S. W. Knowles
F. Masuyama
C. Pearce
D. W. Rahoi
B. W. Roberts
M. S. Shelton
J. P. Shingledecker
R. W. Swindeman

W. R. Apblett, Jr., Contributing
Member
H. Murakami, Contributing
Member

D. S. Janikowski
L. J. Lavezzi
S. G. Lee
W. C. Mack
A. S. Melilli
K. E. Orie
J. Shick
E. Upitis
J. D. Wilson
R. Zawierucha
E. G. Nisbett, Contributing Member

J. F. Henry
J. Penso
D. W. Rahoi
B. W. Roberts
J. P. Shingledecker
W. J. Sperko
J. P. Swezy, Jr.
J. M. Tanzosh

Working Group on Materials Database (BPV II)
R. W. Swindeman, Chair
N. Lobo, Staff Secretary
F. Abe

J. R. Foulds
J. F. Henry
M. Katcher
B. W. Roberts

xx

R. C. Sutherlin
D. Andrei, Contributing Member
J. L. Arnold, Contributing Member
W. Hoffelner, Contributing Member
T. Lazar, Contributing Member
D. T. Peters, Contributing Member
W. Ren, Contributing Member

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

J. M. Tanzosh, Chair
M. J. Slater, Secretary
F. Abe
H. Anada
D. A. Canonico
A. Di Rienzo
P. Fallouey
J. R. Foulds
M. Gold
J. A. Hall
J. F. Henry
K. Kimura


Subgroup on External Pressure (BPV II)
R. W. Mikitka, Chair
D. L. Kurle, Vice Chair
J. A. A. Morrow, Secretary
L. F. Campbell
H. Chen
D. S. Griffin
J. F. Grubb

P. Fallouey
E. Shapiro

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

COMMITTEE ON MATERIALS (BPV II)
J. F. Henry, Chair
D. W. Rahoi, Vice Chair
N. Lobo, Staff Secretary
F. Abe
A. Appleton
J. Cameron
D. A. Canonico
A. Chaudouet
P. Fallouey
J. R. Foulds
D. W. Gandy
M. H. Gilkey
M. Gold
J. F. Grubb
J. A. Hall

K. M. Hottle
M. Katcher
O. X. Li
F. Masuyama
R. K. Nanstad
B. W. Roberts

No fu


J. F. Henry, Chair
F. Abe
S. H. Bowes
D. A. Canonico
K. K. Coleman
G. Cumino
P. D. Flenner
J. R. Foulds
D. W. Gandy

Subcommittee on Design (BPV III)

M. Gold
F. Masuyama
W. F. Newell, Jr.
B. W. Roberts
W. J. Sperko
R. W. Swindeman
J. M. Tanzosh
R. G. Young


R. P. Deubler, Chair
D. E. Matthews, Vice Chair
G. L. Hollinger, Secretary
T. M. Adams
G. A. Antaki
R. L. Bratton
C. W. Bruny
P. R. Donavin
R. S. Hill III
P. Hirschberg
M. H. Jawad
R. I. Jetter

R. B. Keating
R. A. Ladefian
K. A. Manoly
R. J. Masterson
M. N. Mitchell
W. J. O’Donnell, Sr.
E. L. Pleins
T.-L. Sham
J. P. Tucker
K. Wright
J. Yang

Working Group on Data Analysis (BPV II)
J. R. Foulds, Chair
F. Abe
M. Gold

J. F. Grubb
J. F. Henry
M. Katcher

F. Masuyama
W. Ren
B. W. Roberts
M. Subanovic
M. J. Swindeman
R. W. Swindeman

Subgroup on Component Design (SC-D) (BPV III)
T. M. Adams, Chair
R. B. Keating, Vice Chair
S. Pellet, Secretary
G. A. Antaki
S. Asada
J. F. Ball
J. R. Cole
R. P. Deubler
P. Hirschberg
H. Kobayashi
R. A. Ladefian
K. A. Manoly
R. J. Masterson
D. E. Matthews
J. C. Minichiello
D. K. Morton

China International Working Group (BPV II)

X. Wang
F. Yang
G. Yang
R. Ye
L. Yin
H. Zhang
X.-H. Zhang
Yingkai Zhang
Q. Zhao
S. Zhao
J. Zou

Working Group on Core Support Structures (SG-CD) (BPV III)
J. Yang, Chair
J. F. Kielb, Secretary
L. C. Hartless
D. Keck
T. Liszkai
H. S. Mehta

COMMITTEE ON CONSTRUCTION OF NUCLEAR FACILITY
COMPONENTS (BPV III)
R. S. Hill III, Chair
R. B. Keating, Vice Chair
J. C. Minichiello, Vice Chair
A. Byk, Staff Secretary
T. M. Adams
A. Appleton
R. W. Barnes
W. H. Borter

C. W. Bruny
T. D. Burchell
J. R. Cole
R. P. Deubler
A. C. Eberhardt
B. A. Erler
G. M. Foster
W. Hoffelner
R. M. Jessee
R. I. Jetter
C. C. Kim
G. H. Koo
V. Kostarev
K. A. Manoly
D. E. Matthews

R. P. McIntyre
M. N. Mitchell
M. Morishita
D. K. Morton
T. Nagata
R. F. Reedy, Sr.
I. Saito
C. T. Smith
W. K. Sowder, Jr.
W. J. Sperko
K. R. Wichman
C. S. Withers
Y. H. Choi, Delegate
T. Ius, Delegate

H.-T. Wang, Delegate
M. Zhou, Contributing Member
E. B. Branch, Honorary Member
G. D. Cooper, Honorary Member
W. D. Doty, Honorary Member
D. F. Landers, Honorary Member
R. A. Moen, Honorary Member
C. J. Pieper, Honorary Member

M. Nakajima
M. D. Snyder
A. Tsirigotis
R. Vollmer
J. T. Land, Contributing Member

Working Group on Design of Division 3 Containments
(SG-CD) (BPV III)
D. K. Morton, Chair
D. J. Ammerman
G. Bjorkman
G. Broz
S. Horowitz
D. W. Lewis
J. C. Minichiello

E. L. Pleins
C. J. Temus
I. D. McInnes, Contributing Member
R. E. Nickell, Contributing Member
H. P. Shrivastava, Contributing

Member

Working Group on HDPE Design of Components (SG-CD) (BPV III)
T. M. Musto, Chair
J. Ossmann, Secretary
T. M. Adams
T. A. Bacon
C. Basavaraju
D. Burwell
S. Choi

xxi

P. Krishnaswamy
M. Martin
J. C. Minichiello
D. P. Munson
F. J. Schaaf, Jr.
R. Stakenborghs
H. E. Svetlik

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

B. Shou, Chair
Yong Zhang, Vice Chair
X. Tong, Secretary
W. Fang
Q. C. Feng
S. Huo
H. Li

J. Li
S. Li
Z. Rongcan
S. Tan
C. Wang

T. M. Musto
T. Nagata
A. N. Nguyen
E. L. Pleins
I. Saito
G. C. Slagis
J. R. Stinson
G. Z. Tokarski
J. P. Tucker
P. Vock
K. R. Wichman
C. Wilson
J. Yang
C. W. Bruny, Contributing Member
A. A. Dermenjian, Contributing
Member

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Working Group on Creep Strength Enhanced Ferritic Steels (BPV II)

No fu



Subgroup on Design Methods (SC-D) (BPV III)

R. B. Keating
V. Kostarev
Y. Liu
J. F. McCabe
J. C. Minichiello
I.-K. Nam
A. N. Nguyen
M. S. Sills
G. C. Slagis
N. C. Sutherland
E. A. Wais
C.-I. Wu
J. J. Martinez, Contributing Member
N. J. Shah, Contributing Member
E. C. Rodabaugh, Honorary
Member

C. W. Bruny, Chair
S. McKillop, Secretary
K. Avrithi
W. Culp
P. R. Donavin, Jr.
J. V. Gregg, Jr.
H. T. Harrison III
K. Hsu
M. Kassar

Working Group on Design Methodology (SG-DM) (BPV III)

S. D. Snow, Chair
M. R. Breach, Secretary
K. Avrithi
C. Basavaraju
R. D. Blevins
D. L. Caldwell
D. Dewees
C. M. Faidy
H. T. Harrison III
P. Hirschberg
M. Kassar
R. B. Keating
J. Kim
H. Kobayashi

Working Group on Pressure Relief (SG-CD) (BPV III)
J. F. Ball, Chair
A. L. Szeglin

D. G. Thibault

Working Group on Pumps (SG-CD) (BPV III)
R. A. Ladefian, Chair
P. W. Behnke
R. E. Cornman, Jr.
M. D. Eftychiou
A. Fraser
M. A. Gaydon
R. Ghanbari


M. Higuchi
R. A. Patrick
J. Sulley

Working Group on Environmental Effects (SG-DM) (BPV III)

R. Udo

S. Pellet
I. Saito
H. P. Shrivastava
C. Stirzel
T. G. Terryah
G. Z. Tokarski
P. Wiseman
C.-I. Wu

C. Jonker
J. E. Nestell
T. Schriefer
M. S. Shelton
Y. H. Choi, Delegate

Working Group on Environmental Fatigue Evaluation Methods
(SG-DM) (BPV III)
K. Wright, Chair
M. A. Gray, Vice Chair
W. F. Weitze, Secretary
T. M. Adams
S. Asada

K. Avrithi
R. C. Cipolla
J. R. Cole
T. M. Damiani
C. M. Faidy

C. A. Mizer
K. E. Reid II
H. R. Sonderegger
J. Sully
I. Tseng
J. P. Tucker

T. D. Gilman
S. R. Gosselin
Y. He
P. Hirschberg
H. S. Mehta
J.-S. Park
D. H. Roarty
I. Saito
D. Vlaicu
R. Z. Ziegler

Working Group on Fatigue Strength (SG-DM) (BPV III)
P. R. Donavin, Chair
T. M. Damiani
D. Dewees
C. M. Faidy
S. R. Gosselin

R. J. Gurdal
C. F. Heberling II
C. E. Hinnant
P. Hirschberg
K. Hsu
S. H. Kleinsmith
S. Majumdar

Working Group on Vessels (SG-CD) (BPV III)
D. E. Matthews, Chair
R. M. Wilson, Secretary
C. Basavaraju
J. V. Gregg, Jr.
W. J. Heilker
A. Kalnins
R. B. Keating
D. Keck
J. Kim
O.-S. Kim

K. Matsunaga
M. C. Scott
P. K. Shah
J. Shupert
C. Turylo
D. Vlaicu
W. F. Weitze
T. Yamazaki
R. Z. Ziegler


xxii

S. N. Malik
D. H. Roarty
M. S. Shelton
G. Taxacher
A. Tsirigotis
K. Wright
H. H. Ziada
G. S. Chakrabarti, Contributing
Member
W. J. O'Donnell, Sr., Contributing
Member

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

W. Culp, Chair
B. D. Frew, Secretary
K. Avrithi
P. J. Dobson
W. J. Heilker

A. G. Washburn

Working Group on Valves (SG-CD) (BPV III)
P. Vock, Chair
J. O'Callaghan, Secretary
M. C. Buckley
G. A. Jolly
J. Klein

T. A. McMahon

T. Liszkai
J. F. McCabe
A. N. Nguyen
W. D. Reinhardt
D. H. Roarty
P. K. Shah
R. Vollmer
S. Wang
T. M. Wiger
K. Wright
J. Yang
M. K. Au-Yang, Contributing
Member

S. Mauvais

Working Group on Supports (SG-CD) (BPV III)
J. R. Stinson, Chair
U. S. Bandyopadhyay, Secretary
K. Avrithi
T. H. Baker
F. J. Birch
R. P. Deubler
N. M. Graham
R. J. Masterson

D. Keck
M. N. Mitchell

W. J. O’Donnell, Sr.
P. J. O’Regan
W. D. Reinhardt
P. Smith
S. D. Snow
W. F. Weitze
K. Wright

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Working Group on Piping (SG-CD) (BPV III)
G. A. Antaki, Chair
G. Z. Tokarski, Secretary
T. M. Adams
T. A. Bacon
C. Basavaraju
J. Catalano
F. Claeys
J. R. Cole
C. M. Faidy
R. G. Gilada
N. M. Graham
M. A. Gray
R. W. Haupt
A. Hirano
P. Hirschberg
M. Kassar
J. Kawahata

No fu



M. N. Mitchell, Chair
M. W. Davies, Vice Chair
C. A. Sanna, Staff Secretary
T. D. Burchell, Secretary
A. Appleton
R. L. Bratton
S. Cadell
S.-H. Chi
A. Covac
S. W. Doms

S. F. Duffy
S. T. Gonczy
Y. Katoh
J. Ossmann
M. Roemmler
N. Salstrom
T. Shibata
S. Yu
G. L. Zeng

T. Asayama, Chair
M. Li, Secretary
F. W. Brust
P. Carter
R. I. Jetter

G. H. Koo

B.-L. Lyow
S. N. Malik
H. Qian
T.-I. Sham

Working Group on Elevated Temperature Construction (SG-ETD)
(BPV III)
M. H. Jawad, Chair
B. Mollitor, Secretary
D. I. Anderson
R. G. Brown
D. Dewees
J. P. Glaspie
B. F. Hantz

Working Group on Probabilistic Methods in Design
(SG-DM) (BPV III)
P. J. O'Regan, Chair
M. Golliet, Secretary
T. Asayama
K. Avrithi
M. R. Graybeal

D. O. Henry
R. S. Hill III
M. Morishita
N. A. Palm
I. Saito

Special Working Group on Computational Modeling for Explicit

Dynamics (SG-DM) (BPV III)
G. Bjorkman, Chair
D. J. Ammerman, Secretary
M. R. Breach
G. Broz
J. Jordan
D. Molitoris
J. Piotter

G. L. Hollinger
R. I. Jetter
S. Krishnamurthy
A. Mann
D. L. Marriott
M. N. Mitchell
C. Nadarajah

Working Group on High Temperature Flaw Evaluation (SG-ETD)
(BPV III)

W. D. Reinhardt
P. Y.-K. Shih

F. W. Brust, Chair
N. Broom
P. Carter
W. Hoffelner
S. N. Malik

S. D. Snow

C.-F. Tso
M. C. Yaksh
U. Zencker

D. L. Rudland
P. J. Rush
D.-J. Shim
S. X. Xu

T.-L. Sham, Chair
T. Asayama
C. Becht IV
F. W. Brust
P. Carter
J. F. Cervenka
B. F. Hantz
W. Hoffelner
A. B. Hull
M. H. Jawad
R. I. Jetter

G. H. Koo
M. Li
S. Majumdar
J. E. Nestell
W. J. O'Donnell, Sr.
R. W. Swindeman
D. S. Griffin, Contributing Member
W. J. Koves, Contributing Member
D. L. Marriott, Contributing

Member

Subgroup on General Requirements (BPV III)
R. P. McIntyre, Chair
L. M. Plante, Secretary
V. Apostolescu
A. Appleton
S. Bell
J. R. Berry
B. K. Bobo
J. DeKleine
J. V. Gardiner
G. Gratti
J. W. Highlands
G. V. Imbro
K. A. Kavanagh

Working Group on Allowable Stress Criteria (SG-ETD) (BPV III)
R. W. Swindeman, Chair
R. Wright, Secretary
J. R. Foulds
K. Kimura
M. Li
S. N. Malik

J. E. Nestell
W. Ren
B. W. Roberts
M. Sengupta
Working Group on Duties and Responsibilities (SG-GR) (BPV III)


T.-I. Sham

J. V. Gardiner, Chair
G. L. Hollinger, Secretary
S. Bell
J. R. Berry
J. DeKleine
N. DeSantis
Y. Diaz-Castillo
E. L. Farrow

Working Group on Analysis Methods (SG-ETD) (BPV III)
P. Carter, Chair
M. J. Swindeman, Secretary
M. Ando
M. R. Breach

Y.-S. Kim
M. R. Minick
E. C. Renaud
D. J. Roszman
C. T. Smith
W. K. Sowder, Jr.
G. E. Szabatura
T. G. Terryah
D. M. Vickery
C. S. Withers
H. Michael, Delegate
G. L. Hollinger, Contributing

Member

R. I. Jetter
S. Krishnamurthy
T.-I. Sham
D. K. Williams

xxiii

G. Gratti
B. N. Juarez
K. A. Kavanagh
J. M. Lyons
L. M. Plante
D. J. Roszman
T. G. Terryah

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

Subgroup on Elevated Temperature Design (SC-D) (BPV III)

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Working Group on Creep-Fatigue and Negligible Creep (SG-ETD)
(BPV III)

Working Group on Graphite and Composites Design
(SG-DM) (BPV III)

No fu



C. T. Smith, Chair
C. S. Withers, Secretary
V. Apostolescu
A. Appleton
B. K. Bobo
S. M. Goodwin
J. Grimm
J. W. Highlands
Y.-S. Kim
B. McGlone
R. P. McIntyre

M. Golliet, Chair
M. A. Martin, Secretary
W. H. Borter
M. C. Buckley
E. M. Focht
B. Hauger
J. Johnston, Jr.
P. Krishnaswamy

M. R. Minick
R. B. Patel
E. C. Renaud
T. Rezk
J. Rogers
W. K. Sowder, Jr.
J. F. Strunk

G. E. Szabatura
D. M. Vickery
C. A. Spletter, Contributing Member

Joint ACI-ASME Committee on Concrete Components for Nuclear
Service (BPV III)
A. C. Eberhardt, Chair
C. T. Smith, Vice Chair
A. Byk, Staff Secretary
J. F. Artuso
C. J. Bang
F. Farzam
P. S. Ghosal
B. D. Hovis
T. C. Inman
O. Jovall
N.-H. Lee
J. McLean
J. Munshi
N. Orbovic
J. F. Strunk

Special Working Group on General Requirements Consolidation
(SG-GR) (BPV III)
J. V. Gardiner, Chair
C. T. Smith, Vice Chair
S. Bell
M. Cusick
Y. Diaz-Castillo
J. Grimm

J. M. Lyons
M. McGlone
R. Patel
E. C. Renaud

E. W. McElroy
T. M. Musto
S. Patterson
S. Schuessler
R. Stakenborghs
T. Tipton
M. Troughton
Z. J. Zhou

T. Rezk
J. Rogers
D. J. Roszman
B. S. Sandhu
G. J. Solovey
R. Spuhl
G. E. Szabatura
C. S. Withers
S. F. Harrison, Contributing
Member

T. Tonyan
T. J. Ahl, Contributing Member
N. Alchaar, Contributing Member
B. A. Erler, Contributing Member
J. Gutierrez, Contributing Member

M. F. Hessheimer, Contributing
Member
T. E. Johnson, Contributing
Member
T. Muraki, Contributing Member
B. B. Scott, Contributing Member
M. R. Senecal, Contributing
Member
M. K. Thumm, Contributing
Member

Working Group on Design (BPV III-2)

R. M. Jessee, Chair
B. D. Frew, Vice Chair
S. Hunter, Secretary
W. H. Borter
T. D. Burchell
G. R. Cannell
R. H. Davis
G. M. Foster
G. B. Georgiev
S. E. Gingrich
M. Golliet
J. Grimm
J. Johnston, Jr.
C. C. Kim
M. Lashley

T. Melfi

H. Murakami
J. Ossmann
J. E. O’Sullivan
C. Pearce
N. M. Simpson
W. J. Sperko
J. R. Stinson
J. F. Strunk
K. B. Stuckey
R. Wright
S. Yee
H. Michael, Delegate
R. W. Barnes, Contributing Member

Working Group on Materials, Fabrication, and Examination
(BPV III-2)
P. S. Ghosal, Chair
T. Tonyan, Vice Chair
M. Allam
J. F. Artuso
J.-B. Domage
A. C. Eberhardt
C. Jones

Working Group on Graphite and Composite Materials (SG-MFE)
(BPV III)
T. D. Burchell, Chair
A. Appleton
R. L. Bratton
S. Cadell

S.-H. Chi
A. Covac
M. W. Davies
S. W. Doms
S. F. Duffy
S. T. Gonzcy

M. Diaz, Contributing Member
S. Diaz, Contributing Member
M. F. Hessheimer, Contributing
Member
A. Istar, Contributing Member
T. E. Johnson, Contributing
Member
B. R. Laskewitz, Contributing
Member
Z. Shang, Contributing Member
M. Sircar, Contributing Member

M. G. Jenkins
Y. Katoh
M. N. Mitchell
J. Ossmann
M. Roemmler
N. Salstrom
T. Shibata
S. Yu
G. L. Zeng

C. T. Smith

J. F. Strunk
D. Ufuk
J. Gutierrez, Contributing Member
B. B. Scott, Contributing Member
Z. Shang, Contributing Member

Special Working Group on Modernization (BPV III-2)
J. McLean, Chair
N. Orbovic, Vice Chair
A. Adediran
N. Alchaar
O. Jovall
C. T. Smith

xxiv

M. A. Ugalde
S. Wang
S. Diaz, Contributing Member
J.-B. Domage, Contributing Member
U. Ricklefs, Contributing Member

This copy downloaded on 2015-07-13 07:21:56 -0500 by authorized user logan ahlstrom.

J. Munshi, Chair
N. Alchaar
M. Allam
S. Bae
L. J. Colarusso
A. C. Eberhardt

F. Farzam
P. S. Ghosal
B. D. Hovis
T. C. Inman
O. Jovall
N.-H. Lee

Subgroup on Materials, Fabrication, and Examination (BPV III)

Copyrighted material licensed to University of Toronto by Thomson Scientific, Inc. (www.techstreet.com).

Working Group on HDPE Materials (SG-MFE) (BPV III)

Working Group on Quality Assurance, Certification, and Stamping
(SG-GR) (BPV III)

No fu